rate 1/2 constraint len 13, bpsk, ngood, nbad 10^6 trials
 0.00  43968 30
 0.50 111824 33
 1.00 238157 21
 1.50 425263 20
 2.00 634824 14
 2.50 812206 2
 3.00 924507 2
 3.50 975836 0
 4.00 993832 0
 4.50 998695 0
 5.00 999771 0
